// Q&A · Maintenance & Troubleshooting
What oil should I use in an excavator final drive?
Expert Answer
Use the oil grade specified by your machine’s service manual for the final drive, since requirements can vary by make, model, and operating conditions. In many cases, final drives use gear oil rather than hydraulic oil, but the exact viscosity and fill quantity matter. If you are replacing a drive, VANROCK Drives sells brand-new OEM-specification final drive and travel motor assemblies online at vanrockdrives.com. Our drives ship fully assembled, filled with oil, and ready to bolt on, with fast free shipping, duties included, no core charges, and a Limited Lifetime Warranty. For Caterpillar, Komatsu, or any other OEM-named machine, VANROCK Drives is an independent supplier and is not affiliated with the manufacturer. If you want, we can also help you identify the correct replacement by machine model and side.
Answered by VANROCK specialists · Published 9/27/2026
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